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Vote by mail and absentee voting

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Hand holding an American flag and a mail ballot return envelope.

06.25.2026

Administration of Mail-In Voting

Measuring Data Across a Nationwide Patchwork of Policy Decisions 
 

By Arianna Conte

A pair of eyeglasses with thick brown translucent frames rests, upside down, on an open notebook, where one of the pages is full of scribbled notes.

12.16.2021

A Deep Dive into Absentee Ballot Rejection in the 2020 General Election

By Declan Chin

A white USPS truck is stopped at the curb in a suburban neighborhood.

12.14.2021

How Policy Influenced the Partisan Divide over Voting by Mail

By Joelle Gross

A close-up of a USPS box on a city street

09.01.2020

Analysis: Vote By Mail in Colorado and Washington

By Pia Deshpande

A masked and gloved man takes an envelope from a man in a car in front of a capitol building

08.20.2020

What the Elections Performance Index Tells Us About 2020

By Charles Stewart III

A photograph of two blue U.S. postal boxes against a red brick background

07.31.2020

What the Elections Performance Index can — and can’t — tell us about Vote-By-Mail

By Pia Deshpande

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Performance Index
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A PROJECT OF MIT ELECTION DATA & SCIENCE LAB
©2026 Massachusetts Institute of Technology Election Data + Science Lab | Accessibility